The Labour Department on Friday said it has initiated 15 prosecutions against three companies over the MIRROR concert incident last July, during which a giant LED screen fell from height.

The incident at the Hong Kong Coliseum on July 28 last year left two dancers injured, one critically.

In a statement, the department said it has completed an investigation which looked at several areas, including occupational safety and health, as well as employees’ compensation.

It alleged that the relevant occupiers and employers – namely Engineering Impact Limited, Hip Hing Loong Stage Engineering Company Limited, and Studiodanz Company Limited – had failed to provide their workers with safe plant and safe systems of work.

The firms are also accused of failing to notify the Commissioner for Labour of accidents, and to take out employees’ compensation insurance.

The department said the case will be heard at the Kowloon City Magistrate’s Court on March 27.